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// class template array -*- C++ -*- // Copyright (C) 2004-2013 Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 3, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. /** @file tr1/array * This is a TR1 C++ Library header. */ #ifndef _GLIBCXX_TR1_ARRAY #define _GLIBCXX_TR1_ARRAY 1 #pragma GCC system_header #include <bits/stl_algobase.h> namespace std _GLIBCXX_VISIBILITY(default) { namespace tr1 { _GLIBCXX_BEGIN_NAMESPACE_VERSION /** * @brief A standard container for storing a fixed size sequence of elements. * * @ingroup sequences * * Meets the requirements of a <a href="tables.html#65">container</a>, a * <a href="tables.html#66">reversible container</a>, and a * <a href="tables.html#67">sequence</a>. * * Sets support random access iterators. * * @param Tp Type of element. Required to be a complete type. * @param N Number of elements. */ template<typename _Tp, std::size_t _Nm> struct array { typedef _Tp value_type; typedef value_type& reference; typedef const value_type& const_reference; typedef value_type* iterator; typedef const value_type* const_iterator; typedef std::size_t size_type; typedef std::ptrdiff_t difference_type; typedef std::reverse_iterator<iterator> reverse_iterator; typedef std::reverse_iterator<const_iterator> const_reverse_iterator; // Support for zero-sized arrays mandatory. value_type _M_instance[_Nm ? _Nm : 1]; // No explicit construct/copy/destroy for aggregate type. void assign(const value_type& __u) { std::fill_n(begin(), size(), __u); } void swap(array& __other) { std::swap_ranges(begin(), end(), __other.begin()); } // Iterators. iterator begin() { return iterator(std::__addressof(_M_instance[0])); } const_iterator begin() const { return const_iterator(std::__addressof(_M_instance[0])); } iterator end() { return iterator(std::__addressof(_M_instance[_Nm])); } const_iterator end() const { return const_iterator(std::__addressof(_M_instance[_Nm])); } reverse_iterator rbegin() { return reverse_iterator(end()); } const_reverse_iterator rbegin() const { return const_reverse_iterator(end()); } reverse_iterator rend() { return reverse_iterator(begin()); } const_reverse_iterator rend() const { return const_reverse_iterator(begin()); } // Capacity. size_type size() const { return _Nm; } size_type max_size() const { return _Nm; } bool empty() const { return size() == 0; } // Element access. reference operator[](size_type __n) { return _M_instance[__n]; } const_reference operator[](size_type __n) const { return _M_instance[__n]; } reference at(size_type __n) { if (__n >= _Nm) std::__throw_out_of_range(__N("array::at")); return _M_instance[__n]; } const_reference at(size_type __n) const { if (__n >= _Nm) std::__throw_out_of_range(__N("array::at")); return _M_instance[__n]; } reference front() { return *begin(); } const_reference front() const { return *begin(); } reference back() { return _Nm ? *(end() - 1) : *end(); } const_reference back() const { return _Nm ? *(end() - 1) : *end(); } _Tp* data() { return std::__addressof(_M_instance[0]); } const _Tp* data() const { return std::__addressof(_M_instance[0]); } }; // Array comparisons. template<typename _Tp, std::size_t _Nm> inline bool operator==(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) { return std::equal(__one.begin(), __one.end(), __two.begin()); } template<typename _Tp, std::size_t _Nm> inline bool operator!=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) { return !(__one == __two); } template<typename _Tp, std::size_t _Nm> inline bool operator<(const array<_Tp, _Nm>& __a, const array<_Tp, _Nm>& __b) { return std::lexicographical_compare(__a.begin(), __a.end(), __b.begin(), __b.end()); } template<typename _Tp, std::size_t _Nm> inline bool operator>(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) { return __two < __one; } template<typename _Tp, std::size_t _Nm> inline bool operator<=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) { return !(__one > __two); } template<typename _Tp, std::size_t _Nm> inline bool operator>=(const array<_Tp, _Nm>& __one, const array<_Tp, _Nm>& __two) { return !(__one < __two); } // Specialized algorithms [6.2.2.2]. template<typename _Tp, std::size_t _Nm> inline void swap(array<_Tp, _Nm>& __one, array<_Tp, _Nm>& __two) { __one.swap(__two); } // Tuple interface to class template array [6.2.2.5]. /// tuple_size template<typename _Tp> class tuple_size; /// tuple_element template<int _Int, typename _Tp> class tuple_element; template<typename _Tp, std::size_t _Nm> struct tuple_size<array<_Tp, _Nm> > { static const int value = _Nm; }; template<typename _Tp, std::size_t _Nm> const int tuple_size<array<_Tp, _Nm> >::value; template<int _Int, typename _Tp, std::size_t _Nm> struct tuple_element<_Int, array<_Tp, _Nm> > { typedef _Tp type; }; template<int _Int, typename _Tp, std::size_t _Nm> inline _Tp& get(array<_Tp, _Nm>& __arr) { return __arr[_Int]; } template<int _Int, typename _Tp, std::size_t _Nm> inline const _Tp& get(const array<_Tp, _Nm>& __arr) { return __arr[_Int]; } _GLIBCXX_END_NAMESPACE_VERSION } } #endif // _GLIBCXX_TR1_ARRAY